Is there a way to send data from javascript to an exe file

Question

I was making a simple website where when you put in an username and password, It would send it to a c++ executable that would save the data in a txt document.

the executable works fine, but I can't find a way to send the data to the executable.

I tried window.open(), but then, It started to download the exe file.

this is the code of the c++ executable

#include <fstream>
#include <iostream>
using namespace std;
char main () {
   char name[100];
   char password[100];
   cin >> name;
   cin >> password;

   ofstream outfile;
   outfile.open ("data.txt", ios_base::app);
   outfile << name <<"; " << password << endl;
   outfile.close();
}

This depends entirely on the operating system and web server being used. Since the question does not appear to specify either, no authoritative answer is possible. — Sam Varshavchik, Nov 17 '19 at 03:09
Where is your exe file located? On the server or on a client? For the server you can try to setup web server and call your exe from there, Then you pass data from javascript to web server and back with ajax — Anatoliy R, Nov 17 '19 at 03:13

Javier Silva Ortíz · Answer 1 · 2019-11-17T16:05:47.390

1

What you're trying to do is called interproccess comunication. It's quite common, however, in the traditional sense, it can't be done between a web page javascript and a standard desktop app. Still, you can emulate it, one possible way is using sockets/WebSockets in your desktop app and WebSockets in your web page's javascript. The other way could be implementing a simple REST API with two endpoints, one on the app and one on the web page server.

The socket approach is easier, for more info on it, check this post. Also check this WebSocket tutorial and this C++ WebSocket library.

Following up on your comment, all of this can be done in a single computer, in fact, that's what I had in mind when answering.

edited Nov 17 '19 at 16:05

answered Nov 17 '19 at 03:57

Javier Silva Ortíz

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Sorry, I don't want to post the Internet. so I don't have a server. – PY_NEWBIE Nov 17 '19 at 04:55
1

The solution he proposed does not require the internet. Sockets are able to work within a computers internal processes to communicate. This discussion is great for the matter: https://superuser.com/questions/1137897/does-a-localhost-request-connect-to-the-network – Diniden Nov 17 '19 at 06:33

Is there a way to send data from javascript to an exe file

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